institute of technology, from alpharetta, georgia... and and now here isrgia the host of "jeopardy!" --y, alex trebek! thank you, johnny gilbert. entlemen, welcome to the second of our semi-final matches. obviously, we all got the memo -- wear something black or very, very dark today for this match. kristen, cindy, and and g welcome back. good to have you here. good luck, also. here we go -- the "jeopardy!" round. and here are the categories. you know what that means. alex: kristen, start us. i'll take professors for $200. kristen. what is emeritus? that's it. i'll take professors for $400. kristen. what is astronomy? good. i'll take professors for $600.